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Finding the Fourth Proportional to 187,238.76, 280,609.74 and 81,943.08

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Solution

The fourth proportional to 187,238.76, 280,609.74 and 81,943.08 is: 122,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,238.76 : 280,609.74 = 81,943.08 : x
  2. Step 2: Convert to fraction form
    187,238.76/280,609.74 = 81,943.08/x
  3. Step 3: Cross multiply
    187,238.76x = 280,609.74 × 81,943.08
  4. Step 4: Simplify right side
    187,238.76x = 22,994,026,373.60
  5. Step 5: Solve for x
    x = 22,994,026,373.60/187,238.76
  6. Step 6: Final answer
    x = 122,805.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.